Improvement in car-axle boxes



, the car, keeps the GEORGE W. MILTIMORE, OF-JANESVILLE, YVISGONSlN.

IMPROVEMENT IN CARS-AXLE BOXES.

Specification forming part of Letters Patent N o.

E79,938, dated July 18, 1876; application filed May 1, 1876.

To all whom-it may concern:

Be it known that I, GEORGE W. MILTI- MORE, of Janesville, Rock county,State of isconsin, have invented a new and Improved Ga-r-Axle, of whichthe following is a speclcation The accompanying drawin g represents avertical central sect-ion of my improved car-axle.

My invention relates to such improvements in thatelass of' car-axles aryinner and a revolving outer wheel, carrying axle or sleeve, areemployed, that the lubrication of the journal-box from the oil-resisaccomplished, to the exclusion of dust, the drip-oil collected, and thejournalbox allowed to oscillate on the stationar i axle to conformitself to a true bearing throughout, according to the spring of the axleproduced by the weight of the car.

The invention will rst be described, in connection with the drawing, andthen pointed out in the claims.

In the drawing, A represents the stationary axle, which is rigidlyconnected with the spring or pedestal bearers or boxes B by horizon tallocking-pins a. C is the revolving' outer axle or sleeve, which is madeof a laterallyconnecting Wrought-iron section, with end lipsandwheel-ca-rrying sections cast thereon. The

p journal-box D revolves with the sleeve on the stationary axle, and islubricated from an airtight oil-reservoir, E, ofthe pedestal-box, thereservoir being connected with the journal-box by a horizontal channel,b, and a vertical downward-extending channel, b', of the stationaryaxle. The vertical channel b extends above the horizontal channel, andfeeds the oil, by a vibrating and spring-acted pin, d, to the journal.The contact of the feeder-pin with the revolving journal-box, during themotion of )in continually in motion, and admits, thereby, the entra-nceof small quantities of air into the channels, and through the same tothe oil-receptacle.

The vibratory motion of the feeder-pin furnishes thus, mechanically, asmall air-supply t0 the oil-receptacle, and allows, thereby, the feedingof a corresponding quantity of oil, which increases or decreases inproportion to the speed. When the car is at rest the oil ducts orchannels are filled with the oil, but

in which a statica the air-supply is discontinued, as the feederpin isIalso in a position of rest, and supplies no air, so that the oil isheld suspended by the partial vacuum in the oil-receptacle, andprevented i'rom running out. The surplus oil of the journal-box passesout through a closing nut or cap, F, screwed to t-he sleeve andencircling` the a-xle. An annular rimor bead, e, oi" the cap F, conveysthe drip-oil into a chamber or receptacle, B', of the pedestalbox, belowthe axle, from where it may be drawn oi't1 by a screw-plug. Anoil-tightjoint is formed between the pedestal-box and stationary axle bya tapering cork-disk, j', washer1: ing the oilfrom passing in or outbetween the pedestal-box and axle. A loose steel collar or ring, 71 isplaced on thc stationary axle, between the pedestal-box and therevolving screw-cap ofthe ou ter axle to provide for the wear caused bythe lateral motion of the car, which is taken up between thepedestal-block and screw-cap at that point.

The journal-box D is made with a central convex part, and slightlydownward inclined o1' tapering end parts. rlihc outer axle or sleeverests thereon by a corresponding annular concavity, and an outer ring,i, of iron, brass, or other material. The sleeve and ring are arranged,adjoiningl to the annular concave parts, with slight outwardly-inclinedparts which form, with the tapering ends of the journal-box, narrowannular spaces that provide for the oscillating motion of' thej0urnal-box, when the weight of the car causes the springing ofthe inneraxle. The journalboxl is, thereby, always in full contact throughout'itsentire length with the inner axle, and compelled to wear out evenly.

The lubrication of the car-axle is accomplished in an economicalmann-u', and the wearing out of the journal-box diminished, bydistributing the friction throughout the length and circumference of thebox, in consequence of the oscillating` motion of the journal-boxes.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

l. The combination, with the of the stationary axle, having a cork disk,washer, and hollow screw-plug, to form an pedestal-box,

and perforated screw-plug f2, prevent-- oil-iightjoint between thepedestal-box and axle, lQnbsscantinlly as herein shown and dcscribed. f

2. The combination of the closing screw mit or cap ofthe outerrevolving,` nxl el or sleeve Said can having an outer rim or bend, with:L drip-oil chamber below the stationery axle, Substantially as hereinshown and described.

3. The combination of the revolving jonrnal-box, having :L convexannular part. mid tapering ends with the annular conczwed and inclinedrevolving sleeve, and intermediate ring, to provide for the oscillatingmotion of thejournzil-box, substantially as herein shown l.inddescribed.

4. The outer axle or sleeve, made of a. lat'.- erzi-l wrourjli-ironsection, and cast-iron end sections, substantially as herein shown anddescribed.

GEORGE W. MLTIMORE.

\Vitnesses T. Be Ilieennr., A LEX. F. ROBERTS.

